AJ-SRO4M - unable to get distance

[pmwalker999]

Hi all,

i am having a lot of trouble with my AJSR04M waterproof distance sensor.
my main issue is that the sensor is always giving me an error message of 9999 on my lcd.
i have used a flow chart form a working model using the exact same sensor and i am stumped.
i need it to get a distance and display it on my 2x16 lcd so i can reverse engineer it and input the distance into another flowcode so it can be used as a variable for an AND gate.

i am using an arduino R3 uno

i would appriciate if anyone could help me as this has been driving me mad for weeks

(P.S i have tried using the HCSR04 sonic sensor and i can make it work, that is why this is so fustrating)

flowcode file is attatched if needed

[medelec35]

Hello.
Have you tried a lower prescaler value e.g. 1:1 or 1:8?

[pmwalker999]

Hi,
i have tried to change the values with no effect and i am unsure how that would change my result what do the prescaler and post scaler timings affect?